Art of mothproofing



PAT

ENT OFFICE.

IICHAEBGI-MINAEFFIANIDALBEBTPARSONS SACHS, OF NEW YORK, N. Y., ASSIGNORS,

BYFMESNE ASSIGNMENTS, "1'0 THE LARVEX CORPORATION, OF BROOKLYN, NEW

YORK; AICORPORATIONOI 1N EW 103K.

am: or uornrnoorme.

lo'm'rawingny before yor. after. "making such. fabrics into clothing; Wehave-found-thatmost of the lofldiflicultiesa-of priorpractice have beenv due to the use of solutions containingtoo strong :an acid'such:as-sulphuric acid or toolarge quantities of weakeracids. When strong acids or large-quantitiesof the weaker acids A l "are used, it is essential "that. v the ,material,

knitted goods treated be subsequently thoroughly washed' ,or rinsed;'otherwise-the;material will re-- mainv strongly' acid and. will be subject v to deterioration and: losscof tensile strength vdue 20. "tothe presence of this acid.: I

In thextreatment'f of finished goods or clothing,,it.:is*not; manifestly, feasible or practical to rin'se-or wash the goods after treatment to eremovesur'plus acid and ac-' 2 cordingly-the present invention aims to produce acomposition with: which. finished 1 goods and clothing;may rbe treated. to leave -them:in a=substantially neutral oronly ve slightly acid condition and without necessitatmgyany; subsequent: treatment such as washin ,rinsings'orethe-like Anot er object of theinvention is to provide a moth proofing, treatment which will bev satisfactorily, permanent against wear, as Jusage, cleanin ,zwetting, by rain, etc. A' still-rfurt erobject of the, invention is to providela composition whichmay be efficiently andnproperlyappliedto woole'ns. by spraying or spon -ing:- them with thecom- 40 position. It has ens found that solutions of fluorides combined with other chemicals having, mothl. proofing; properties do not easily; penetrate into-:woolen fabrics and when..:applieda in: pure form are apt to roll 1 off orreva 'orate without 'impregnatin the fabrics; 'I. i npregnation.-. of 1 a fabric by a moth; ,proofing 1 solution: cannot always be readily accomplished evenif the fabric can be immersedinthe-so1utionfor a short time, but; as even'this is not practical in the treatment of: finishedgarments, the composition fer-this invention .is so constituted that it will of itself/effect efficient wetting ofthe fabric without immersion. v

Applicatibmflled Iunc21, 1824. serial No. 721,520.

An important feature of thepresent invention resides in the fact that the moth proofing composition of the present invention is slightly acid in reaction and exhibits no deleterious properties toward the animal fibers. At the same time, it retains the desirable moth proofing properties and may be prepared in such form that it can be readily used alike by the textile trade and housewives with the same efficient and effective results in protecting woolen goods from the ravages of the moth larvae.

Our research and experiments have dempractically neutral or only very! onstrated that a moth proofing composition containing soluble fluorides or soluble silico fluorides or mixtures of these soluble fluorides and silico fluorides can be prepared in such strength in aqueous solution as to impart to the resulting composition properties well adapted 'to carry out the objects of the invention which have been enumerated.

It has been found that certain organic compounds applied alone or in a mixture with one another, or with fluorides or' with silico fluorides, or both, show valuable moth proofing properties. Among these organic compounds are the alkali 'metal salts of henzene sulphonic acids, or of derivatives of benzene sulphonic acid; for example: sodium benzene sulphonate, sodium chlor-benzene sulphonate or sodium benzene di-sulphonate the function of any one of these salts being to enhance the moth proofing effect of the composition.

Another organic compound which may be employed is .a salt of naphthalene beta-sulphonic acid or of its derivatives, as for example: sodium, potassium, lithium or barium salt of chlor-naphthalene-beta-sulphonic acid, or of chlor-naphthalene-beta-di-sulphonic acid; the function of such salt being to materially enhance the moth proofing effect of the composition to which it is added.

In our compositions we may use a soluble sulphate, i. e., sodium sulphate or alum, which we have found assists materially in the Wetting of the fabrics and increases the permanency of the moth proofing effect.

A moth proofing composition comprising the ingredients enumerated produces very satisfactory results when applied to woolen goods for the purpose of moth proofing the same in that the goods so treated are found to be immune to the attacks of the moth larvae and do not show any deteriorationor weakening of tensile strength or durabihty of the fibers or fabrics subsequent to this treatment with such a composition.

It has been found in practice that the ingredients entering into our compositron can be used within the following definite ranges: sodium fluoride, .1 to 2.5%; sodium silico fluoride, :1 to .6%; sodium sulphate, .1 to 1%; sodium benzene sulplionate, .01 to .5%; sodium salt of naphthalene beta-sulphonic acid, .01 to 170; and alum, up to .5 o.

a is of course to be understood that neither all the maximum quantites nor all the minimum quantites given in this formula should be compounded, but we have set forth the practical limits of the respective constitutents which enter into the composition. 0

We usually prefer to employ the ingredients enumerated with the omission of alum when sodium fluoride is used, whereas if the sodium fluoride is omitted, the alum is generally employed.

It is important from a practical standpoint that woolens treated with our composition do not require washing or rinsing as in the case of prior processes where fluorides are applied in strongl acidic solutions.

By the term solub e fluoride we mean to include the fluorides of the alkali metals, sodium, potassium, and lithium, and the metals zinc and aluminum.

By the term soluble silico fluoride we mean to include the silico fluorides of the alkali metals, sodium, potassium, lithium,

and the metals zinc and aluminum.

The term alkali metal salt of benzene sulphonic acid is intended to include also such salts of derivatives of such acid.

The term a metal salt of naphthalene beta-sulphonic acid is intended to include the sodium, potassium, lithium, and barium salt of the substituted and unsubstituted acid.

The term a soluble sulphate is intended to include the alkali metal sulphates as well as zinc and aluminum sulphates, and potash alum.

It is of commercial practical importance that the moth proofing composition which we have hcreinbefore described will not appreciably act on glass and this renders it possible to package the composition for household use in bottles in which it may be kept indefinitely and ready for use.

Having thus fully described the invention, what we claim as new and desire to secure by Letters Patent is:

1. A substantially neutral moth proofing ronilposition containing a soluble silico flu- Ol'lC Q.

2. A substantially neutral moth proofing composition containing sodium silico fluor ide.

3. A substantially neutral moth proofing composition containing a solublesilico fluoride and a soluble sulphate.

4. A moth proofing composition containing a soluble fluoride, a soluble silico fluoride, and a soluble sulphate.

5. A moth proofing composition containing a soluble fluoride, a soluble silico fluoride, a soluble sulfate, and an alkali metal salt of benzene sulphonic acid.

6. A moth proofing composition containing a soluble fluoride, a soluble silico fluor-,

ide, a soluble sulfate, an alkali metal salt of benzene sulphonic acid, and a metal salt of naphthalene beta-sulphonic acid.

7. A moth proofing composition containing sodium fluoride, sodium silico fluoride, and sodium sulfate.

8. A moth proofing composition containmg sodium fluoride, sodium silico fluoride, sodium sulfate, and sodium benzene sulfonate.

9. A moth proofing composition containing sodium fluoride, sodium silico fluoride, sodium sulfate, sodium benzene sulfonate, and sodium naphthalene beta-sulphonate.

10. A moth roofing compositioncontaining sodium uoride approximately .1 to 2.5%, sodium silico fluoride approximately .1 to .G%, and sodium sulfate approximately .1 to 1%.

11. A moth roofing composition containing sodium uoride approximately .1 to 2.5%, sodium silico fluoride approximately .1 to .6%, sodium sulfate approximately .1 to 1%, and sodium benzene sulfonate approximately .01 to .5%.

12. A moth proofing composition containing sodium fluoride approximately .1 to 2.5%, sodium silico fluoride approximately .1 to .6%, sodium benzene sulfonate ap roximately .01% to 5%, and sodium nap ithalene beta-sulfoiiate approximately .01 to .4%.

13. A moth proofing composition containing sodium fluoride approximately .1 to 2.5%, and sodium silico fluoride approximately .1 to .6%. I

1 1. The method of moth roofing woolen goods which consists in app ying a substantially neutral'liquid com )osition containing sodium silico fluoride and a soluble sulphate.

15. The method of moth proofing woolen goods which comprises applying a substantially neutral composition containing a soluble fluoride and a soluble silico fluoride thereto.

16. The method of moth proofing woolen goods which comprises applying a substantially neutral composition containing a soluble fluoride, a soluble silico fluoride, and a soluble sulfate thereto.

17. The method of moth proofing woolen goods which comprises apglyin tion containing a soluble uori e, a so uble silico fluoride, a soluble sulfate, and an alkali metal salt of benzene sulphonic acid 5 thereto.

18. The method of moth proofing woolen goods which comprises applying a composition containing a soluble fluoride, a solcom osiv uble silico fluoride, a soluble sulfate, an alkali metal salt of benzene sulphonic acid, and a metal salt of naphthalene beta-sulphonic acid thereto.

' In testimony whereof we have signed the foregoing s ecification.

ICHAEL G. MINAEFF.

ALBERT PARSONS SACHS. 

